Floor-frame for cars.



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PATENTED DEC; 8, 1903.

Y H. CARLTON. FLOOR FRAME ROR OARs.

APPLICATION FILED JULY-8.- 1903.

No MODEL.

@mimo/mo PATENTED DEG. 8, 1903.

R. CARLTON.

FLOOR FRAME POR OARS.

- APPLIUATION FILED JULY 8. 1903.

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Patented December 8, 1903.

PATENT OFFICE.

HOWARD CARLTON, OF ROLAND PARK, MARYLAND.

FLOOR-FRAME FOR CARS.

SPECIFICATION forming part of Letters Patent No. 746,457, dated December8, 1903.. Application filed July 8,1903. Serial No. 164,668. (No model.)

To ctZZ whom it may concern:

Be it known that I, HOWARD CARLTON, a citizen of the UnitedStates,residin g at Roland Park, in the county of Baltimore and State ofMaryland, have invented newand useful Improvements in Floor-Frames forCars,of which the following is a specification.

My invention relates to the floor and floorframing of railway-cars, andespecially to the arrangement of the stringers and center sills, whichare preferably of metal, and the combination of the latter with thebody-bolster,

struction and combinations and arrange,

ments of parts, as hereinafter set forth and claimed. v

The accompanying drawings illustrate one example of the physicalembodiment of the invention constructed according to the best .mode Ihave so far devised for the practical application of the principle. Y

Figure 1 illustrates in plan view the half of the Hoor-framing of a car.Fig. 2 is a longitudinal section in elevation of Fig 1, taken on alongitudinal line throughlthe center. Fig. Sis a half end view of Fig. lin elevation and a half sectional view taken on a line at the center ofthe floor-frame and floor. Fig. 4 illustrates the union of the channelcenter sills with the body-bolster. Fig. shows one end of a center sillnotched to receive an end sill and slotted to receive straps which unitethe top Iianges of the body-bolster.

Referring to the several igures, the numeral 1 designates the centersills, in this instance consisting of steel channel-beams,with theirplane sides facing each other and extending from end to end of the'car;2, a notch cut in the end of each sill to receive the end sill; 3, twoslots made in the center sills approximately at their neutral axes toreceive straps which unite the top iianges of the bodybolster; 4,iilling-st-rips located upon the top anges of the steel center sills,said fillingstrips increasing in depth from the ends to the center, sothat the central portions are from one-half an inch to an inchthickerthan at the extreme ends thereof; 5, the intermediate stringere,which in this instance are of wood and about nine inches in depth;6,.the side sills, shown in the views as approximately twelve inches indepth; 7, the end sill seated within the notched spaces 2 of the steelcenter sills; 8, a cast-metal body-bolster having top and bottomflanges; 9, seats at the ends of the bolster for the reception of theside sills; 10, recesseseach side of the center of the bolster toreceivethe steel channel center sills.

11 11 are straps which passthrough slots 3 inthe steel channel-sills andare riveted or boltedto the upper Harige of the body-bolster.

12 designates cross-frame tie-timbers located between the sills andstringere; 13, a needle-beam of ordinary construction; 14, intermediatefilling-strips between the needlebeam and the cross-frame tie-timbers;15, the queenposts; 16, truss-rods extending from end to end of the carand anchored in the end sills; 17, truss-rod fulcrum-blocks, which inthis case rest upon the top fiange of the bodybolster, and 18 is a tierod which passes through the sills and stringere adjacent thecross-frame tie-timbers.

It will be observed that when in erecting the frame the truss-rods,which are provided with the ordinary turnbuckles, are tightened,

the side sills and stringers are slightly cambered or hogged, thefilling-strips 14 being of suliicient depth to raise the intermediateand side sills at their centers when the top surface of the needle-beamcomes in contact with the lower flanges of the center sills. The centersills are on straight lines from end to end and not under excessivetension, the tapered filling-strips on top of the center sills lling thespace which would otherwise be more or less open between the top edgesof the center sills and the lioor. The diierence between the thicknessof the filling-strips at the ends and at the centers of the car ofcourse corresponds to the camber at the cen- IOO ter. rIhe needle-beamatits top surface bears against the filling strip 14 and the lowerianges of the center sills, so that the lweight of the floor and theload is equally distributed `frame of center sills, side sills andstringers,

'tial departures. Acenter sills as consisting of steel channels, I

and supported by the side sills, stringers, and the center sills. Thesteel channel-sills are by this arrangement maintained substantially instraight lines and not cambered or under tension between thebody-bolsters.

The union of the center sills and body-bolster is of a simple character.The center sills are not weakened, for the slots 3 3 are at the neutralaxes of the beams, the upper and lower flanges or chords being preservedintegral, and the body-bolster upper chord or tension member possessesample strength by being united by the two straps, the removal of whichwill allow the withdrawal of the bolster without disturbing the centersills.

From the foregoing descri ption,taken in connection with the drawings,it becomes clear center sills located in line with the draft-rigging,where they can take the strains of drawing and towing directly,and thatthis has been accomplished without weakening the said sills at theirpoints of connection with the bodybolster.

c While I have illustrated and described but one example of the physicalembodiment of 'my invention, I do not thereby intend to limit the scopethereof to the exact features of construction, inasmuch as changes andmodi- -cations may be introduced at the will of. the

manufacturer without constituting substan- While I have illustrated themay in some cases substitute therefor composite metal and Wooden sillsor sills entirely of wood and arrange them as set forth in thedescription, so that they will not be under excessive tension when thetruss-rods are tightened. The construction of the body-bolster and themethod of uniting the body-bolster and center sills may also bemodiiiedand a union of the parts effected without impairing the strengthof the body-bolster or center sills.

What I claim as new, and desire to secure by Letters Patent, is

l. The combination in a car-iioor and floor the oor being cambered andthe center sills being in straight lines substantially from end to end.

2. The combination in a floor-frame for cars of center sills, side sillsand stringers, the side sills and stringers being cambered and thecenter sills in substantially straight lines between the body-bolsters.

3. The combination in a car-floor and floorframe, of side sills,stringers, and center sills consisting of steel channels; filling-stripslocated upon the topv flanges of the channels and being of greater depthat the centers than at the ends; a needle-beam; and truss-rods; the saidfloor, side sills and stringers, being cambered and the center sillssubstantially straight in substance as set forth.

4. The combination in a car-Hoor frame, of side sills, center sills, andstringers; crossframe tie timbers; needle beam; fillingpieces betweenthe needle-beam and crossframe tie-timbers; and truss-rods; thesaidneedle-beam bearing against the lower surfaces of the center sills,which are in substantially straight lines and the side sills andstringers cambered. f i

5. The combination in a car-fioor frame of steel channel center sills.side sills and stringers, the channel-sills being in straight lines fromend to end, the side sills cambered and the floor also cambered; aneedle-beam and truss-rods which are anchored in the end sills.

6. The combination in a floor-frame, of center sills; side sills; and abody-bolster;4 said body-bolster being recessed adjacent its cenltralportion and the center sills located in said recesses; and straps passedthrough the cen"- ter sills and united to the body-bolster.

7. The combination in a car-floor frame, of channel center sills; abody-bolster having top and bottom ianges; and straps; the'lower edgesof the center sills being located below the top flanges of thebody-bolster and provided with slots through which the straps pass, andsaid straps secured to the upper -ange of the body-bolster.

8. The combination in a car-floor frame, of a body-bolster having topand bottom ianges and a web, and recesses formed in the bolster eachside of its center; channel center sills located within the recesses;and straps passed through the webs of the channel-beams and secured tothe top flange of the body-bolster.

9. The combination in a car-floor frame, of

a body-bolster recessed each side of its cen` ICO' IOS

IIO

